miller



(. F. MILLER.

101NT FOR FlLTER PRESS DE-VICES.

APPLICATION HLED MA11.31. 1919.

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ll/lllllllllll/llll'l/n IMVENTR 2&9 Amm/ver G. F. MILLER.

10m FOR FILTER PRESS DEVICES.

APPLICATION FILED MAR. 3l. |919.

atented Aug. 19, 1919.

2 SHEETS-SHEET Z.

L Afro/mfr UNITED, STATES PATENT OFFICE.

enonen F. MILLER, or Nnw'Yonx, N. Y.

JOINT Fon rmrnnfrnnss DEvIcEs.

l Specification of Letters Patent.

Patented Aug. 19, 1919.

Application tiled March 31, 1919. Serial No. 286,399.

To all whom z't may concern:

Be it known that I, GEORGE F. MILLER, a citizen of the United States, residing in the city of New York, county of New York, borough of Manhattan, and State of New York, have invented certain new and useful Improvements in Joints for Filter-Press Devices, of which the following is a full, clear, and exact specification.

My invention relates to filter press devices and refers particularly to a connecting means between the heads and side bars of pressure filter presses.

Filter presses of this character are usually constructed of two fixed oppositely opposed heads, side bars and series of ilter 1:press plates and filter press frames carried by and movable upon the side bars. A movable follower operated by screw means from one of the heads abuts the plates and frames upon each other and upon the other head,

filter cloth being interposed, considerable` pressure being thus employed in order to make'tight jointures between the plates and the frames to allow of successful and practical filtering.

All of the stress therefore, is exerted againstthe two heads tending to force them apart and as these heads are fixedly attached to the side bars, it is. evident that the jointure between the heads and the Side'bars must be particularly secure in order to withstand the strain to which the heads and side bars are thus subjected.

Numerous methods are 'employed to accomplish this result, but they are either heavy and cumbersome in construction or of such a character as to materially weaken the tension strength of the side bars.

The device of my invention overcomes these disadvantages and presents a means whereby the jointure between the heads and the side bars may be produced without undue weight of material and without lessening the tension strength of the side bars.

In a broad way, my device comprises a filter press head, a lug of which extends through a proper opening in the face of the side bar and a relnforcing member, all of which are firmly locked together.

In the particular form of the device of my invention disclosed in the accompanying drawings, similar parts are designated by similar numerals.

Figure 1 is a broken top planjview of a tion.

press including a device of my inven- Fig. 2 is a broken side plan :view of my device.

Fig. 3 is a section through the line 3-3 .of Fig. 2.

of a reinforcing The means of attaching each side bar 10 I to the heads 11 and 12 is asv follows:-

An angular opening 14 is made in the,

body of each side bar 10 inthe end portion thereof, through which the lug 15 of the head 11 passes, the lug 15 vfitting within the opening 14:. A reinforclng mem# ber 1'6 has an opening 17,.similar to the opening -14:, through which the lug 15 also extends. The reinforcing member 16 abuts upon the faceof the channel'side bar 10,

vand has an extended member 18 at right angles to the portion 16 and abuttable upon the head 11 and the end of the side bar 10. f A plate 19 abutsupon the head 11', the side bar 10 and the reinforcing member 16. A screw bolt 20, extends through the plate 19 and threads within an opening within the lug 15, the plate 19 being held in position by the screw bolts 19', 19

v To assemble the device, the side bar 10 is placed within the recess 21 of the head 11, 'the lug 15 extending through the opening 17. The reinforcing member 16 is abutted upon the face of the side bar 10, the extended portion 1'8 abutting upon the face of the head 11 and the ends of the side bar 10, the lug 15 extending through the opening 17. 4The plate 19 is then placed in position and the whole firmly fixed by setting up the screw bolt 20.

' Each side bar 10 is thus fixedly attached to both heads 11- and 12. Fig. 1 illustrates a lilter press of this construction with a series of filter press frames and lilter press plates assembled in the usual Way. When the follower is moved inwardly by means of the screw 22 threaded Within the head 12, the plates and frames vvill be pressed upon each other and against the head 11, a very considerable pressure being necessary in order to form a proper construction for ltering purposes.

It is evident therefore that there is a strong outward stress upon the two heads 11 and 12 and thatl their attachment to the` side barsV 10, lOlmust be of a most secure character.

This outward stress of the heads is exerted bythe lugs 15, 15 upon both the side bars 10, 10, the reinforcing members 16, 16 and their extended lportions 18, 18, and

. any loss of strength of the side bars 10, 10

by reason of the openings 14.-, 14 is more than compensated by the reinforcing members 16, 16 which are ixedly attached to the lugs 15, 15 abutting upon the faces and ends of the side bars 10, 10 and the faces ofthe heads, the lugs 15, 15 extending through openings in the reinforcing members 1e, 16.

While I have shown the use of channelshaped side bars, it is evident that my form of construction can be similarly applied to side bars of other shapes, as angle irons, at irons, etc. v

I do not limit myself to the particular size, shape, number or arrangement of parts as shown and described, all4 of which may be varied without going beyond the scope of myvinvention as shown, described and claimed. 4

1; In a device of the character specified, in combination, a flter'press head, a recess Within each opposite side face of the head capable of receiving a sidebar, a side bar within each recess, an opening through the face of each side bar, a reinforcing memb'er abuttable upon the face of each side bar, an

A o enin throu h each reinforcin member,l P g g g member, a he 1 a head lug placeable through the opening in a side bar and the ope 'in thereinforcing member and means or preventing the movement of the side bars.

2. In a device of the character specified, in combination, a filter press headi a recess within eichopposi site` fm of the had capable of receiving a side bar, a side bai within ea'ch recess, an opening through the face of each side bar, a reinforcingA member. abuttable upon the face of each side bar, an openin through each reinforcing. placeable through the opening in a 'side ar and the opening in the reinforcing member andmeans forretaining` the abutment betweenthe side bars and the reinforcing members.`

3. In a device of the character specified, in combination, a filter press head, a recese missie Within each opposite side face of the head capable of receiving aside bar, a side bar Within each recess, an opening through the face of each side bar, a reinforcing member abuttable upon the face of each side bar, an opening through each reinforcing member, a member integral with each reinforcing member abutting upon theface of the head, a head lug placeable through the openingin a side bar and the opening in the reinforcing member and means for-proventi ing the movement of the side bars.

5. In a device of the character specified, in combination, a ,filter press'head, a recess Within each opposite side face of the head capable of receiving a, side bar, a side bar within each recess, an opening through the face of each side bar, a reinforcing member abuttable upon the face of each side bar' an opening) throughv each reinforcing member, a mem er integral with each reinforcing member abutting upon the face of the head, a head lug placeable through the opening in a side bar and the opening in the reinforcing member and means for fxedly attaching the side bars to the reinforcing members.

6. In a `device of the character specified, in combination, a filter press head, a recess within each' opposite side face of the head capable of receiving a side bar, a side bar Within each recess, an opening through the face of each side bar, a reinforcing member abuttable upon the face of each side bar an opening1 through each reinforcing member, a head ug placeable through the opening in a side bar and the opening 1n the reinforcing znember, a plate abuttable upon the head and the reinforcing member and means for fxedly attaching the head, the reinforcing memben and the fplate.

7. In a device o the character specified, in combination, a filter press head, a recess within' each opposite side face of the head capable of receiving a side bar, a side bar Within each recess, an opening through the face of each side bar, a reinforcing member abuttable upon the face of each side bar, an openin through each reinforcing mem* ber, a hea` lug placeable through the opening in a side bar and the opening in the reinforcing member, a plate abuttable upon the head, the reinforcing member and the side bar and means for ixedly attaching the i head, the reinforcing member, the side bar and the plate.

8. In a device of the character specified, in combination, a filter press head, a recess within each opposite side face of the head capable of receiving a side bar, a side bar within each recess, an opening through the face of each side bar, a reinforcing mem- 10 ber abutta'ble upon the face of each side bar,

an opening through each reinforcing member, a member integral with each reinforcin member abutting upon the face ofthe hea a head lug placeable through the opening in -aside bar and the opening inthe reinforcf lng member, a plate abuttable upon the head and the reinforcing member and means for ixedly attaching the head, the reinforcing member and the plate.

9. In a device of the character specified, in

combination, a filter press head, a recess4 within each opposite side face of the head capable 0f receiving a side bar, a side bar within each recess, an opening through the face of each side bar, a reinforcing memberv abuttable upon the faceof each side bar, an opening through each reinforcing member, a member integral with each reinforcing member abutting upon the face of the head, a head lug placeable through the opening in a side bar and the opening in the reinforcing member, a' plate abuttablc upon the head, the reinforcing member and the side bar and means Afor iXedly attaching the head, the reinforcing member, the side bar and the plate.

Signed at New York city, in the county of New York and State of New York, this 27th day of March7 '1919.

GEORGE F. MILLER. 

